BWF (Badminton World Federation) has imposed a 5-year ban on shuttler Nikita Khakimov on the charges of betting, wagering and irregular match results. He represents which of the following countries?

Russia

The correct answer is Option (4) → Russia

Nikita Khakimov, a shuttler from Russia, has been banned for five years by the Badminton World Federation (BWF) due to allegations of involvement in betting, wagering, and irregular match results.